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cifs: update super_operations to show_devname

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This is needed so that we display the correct //server/share vs
\\server\share in /proc/mounts for the device name (in the new
mount API).

Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
This commit is contained in:
Steve French 2020-12-14 20:08:10 -06:00
parent 5c4b642141
commit 653a5efb84
1 changed files with 21 additions and 0 deletions
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21
fs/cifs/cifsfs.c
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@ -462,6 +462,25 @@ cifs_show_cache_flavor(struct seq_file *s, struct cifs_sb_info *cifs_sb)
seq_puts(s, "loose"); seq_puts(s, "loose");
} }
/*
* cifs_show_devname() is used so we show the mount device name with correct
* format (e.g. forward slashes vs. back slashes) in /proc/mounts
*/
static int cifs_show_devname(struct seq_file *m, struct dentry *root)
{
struct cifs_sb_info *cifs_sb = CIFS_SB(root->d_sb);
char *devname = kstrdup(cifs_sb->ctx->UNC, GFP_KERNEL);
if (devname == NULL)
seq_puts(m, "none");
else {
convert_delimiter(devname, '/');
seq_puts(m, devname);
kfree(devname);
}
return 0;
}
/* /*
* cifs_show_options() is for displaying mount options in /proc/mounts. * cifs_show_options() is for displaying mount options in /proc/mounts.
* Not all settable options are displayed but most of the important * Not all settable options are displayed but most of the important
@ -695,6 +714,8 @@ static const struct super_operations cifs_super_ops = {
.free_inode = cifs_free_inode, .free_inode = cifs_free_inode,
.drop_inode = cifs_drop_inode, .drop_inode = cifs_drop_inode,
.evict_inode = cifs_evict_inode, .evict_inode = cifs_evict_inode,
/* .show_path = cifs_show_path, */ /* Would we ever need show path? */
.show_devname = cifs_show_devname,
/* .delete_inode = cifs_delete_inode, */ /* Do not need above /* .delete_inode = cifs_delete_inode, */ /* Do not need above
function unless later we add lazy close of inodes or unless the function unless later we add lazy close of inodes or unless the
kernel forgets to call us with the same number of releases (closes) kernel forgets to call us with the same number of releases (closes)